Gun.



P. 1. KELLY.

GUN.

APPLICATION FILED JAN. 6. 1913.

, 1,166,887- I Patented Jan. 4, 1916.

Inventor,

Attorne'ys,

PATRICK J'. KELLY, 0F ELIZABETH, NEW JERSEY.

GUN.

Specification of Letters Patent.

Patented Jan. 4., 1916.

Application filed January 6, 1913. Serial No. 740,496.

To all whom it may concern:

Be it known that I, PATRICK J. KELLY, a citizen of the United States,residing at Elizabeth, in the county of Union and State of New Jersey,have invented a new and useful Gun, of which the following is aspecification.

The present invention relates to improvements in guns, theprimary'object of the invention being the provision of a gun of the typein which the projectile is propelled,

due to the ignition and explosion of gas or combustible material withina chamber formed in the breech of the gun, the primary object of theinvention being the provision of cooperable means carried by theprojectile adjacent the base thereof and within the chamber to Provide agas tight joint at the breech of the barrel to cause the concentrationof the propelling force upon the base of the projectile, the contact ofthe ring upon the projectile being such as to permit of the movement ofthe projectile therethrough and out of the barrel,

A further object of the present invention is the provision of a gun oflarge caliber, for use upon warships and forts, by which, due to theconstruction of the breech thereof and the employment of a gas formingliquid or any other suitable gas, such as gasolene, alcohol or cotton orother material saturated with a hydrocarbon fluid, as a propellingmedium, the projectile will be properly and efficiently projectedthrough the barrel, thus providing a gun which is safe to operate and inwhich the cost of manufacture and operation is reduced to a minimum.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and' claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of the inventon.

In the drawings-Figure 1 1s a longitudinal sectional view through thebreech of a gun constructed according to and embody.- ing the presentinvcntlon with a pro ectile in position for firing. Fig. 2 1s a sectiontaken on line 2-2. of Fig. 1.. Fig. 3 1s a view illustrating the gun,when used for firing blank or a salute.

Referring to the drawings, the gun 1 which is constructed similarly toguns of large caliber now employed, comprises the barrel 2 having theenlarged breech chamber 3 at the breech end thereof and providng theannular shoulder or wall t surroundmg the breech end of the bore andarranged at right angles to the axial line of the barrel, the purpose ofwhich will presently appear. The breech block 5, of any desiredconstruction, is employed, to seal the rear open end of the chamber 3while led to this chamber is a gas or liquid conducting pipe 6, providedwith a check valve 7 so that the explosion of the gas within the chamber3 will be excluded from the conduit 6. In order to ignite the chargewithinthe chamher 3 a jump spark plug 8 or any other ignition devlce,may be employed.

A projectile 9, which is of conventional shape, has disposed about thecylindrical base end 11 thereof, a ring or gasket 10, whose forward face12 is'adapted to abut the wall 4, and thus provide a gas tight jointthereat. so that the explosion of the liquid or gas within the chamber 3will be exerted upon the projecting base end of the projectile beyondthe ring 10, and as the friction between the ring 10 and the projectile9 at 11 is such as to exclude the passage of the gases therebetween, butto permit the propulsion of the projectile through the ring, which isprevented forward mo ement by the shoulder 4, the projectile 9 will bepropelled through the barrel 2.

' By this construction of gun. the charge of gas for propelling theprojectile 9 mav be varied so that the range of the projectile will bevariable and the trajectory may be increased or diminished according tothe distance that is necessary to propel'the projectile.

By the construction of the valve conduit 6, a charge of gas is properlvadmitted to the chamber 3 after the projectile 9 has been placed withinthe barrel with the ring 10 forced into engagement at 12 with the wall4, after which time, the sparking device L is energized to ignite thegas or other charge within the chamber 3, the ignition and expansion ofwhich will cause the propulsion of the projectile as described.

What is claimed is:

In a gun, a barrel having a bore and provided with an enlarged breechchamber defining a shoulder; means for conducting an explosive charge tothe chamber; means for igniting the charge; a projectile in the borejected to gas pressure when said ring is in 10 and extended into thechamber; asingle abutment with the shoulder. ring surrounding theprojectile and fric- In testimony that I claim the foregoing as tionallyheld thereon, the ring engaging the my own, I have hereto aflixed mysignature 5 shoulder, the periphery of the ring being in the presence oftwo Witnesses.

spaced-from the wall of the chamber to ad- PATRlCK J. KELLY. mit gasonto the periphery of the ring, there- Witnesses:

by to compress the ring onto the projectile, CHARLES W. TOCKNELL,

the rear face of the ring being directly sub- HAROLD TOCKNELL.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington. I). G.

